linux-kernel - Re: [PATCH 1/20] x86_64: Assembly safe page.h and pgtable.h

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Message-ID: <20070307192404.GA31826@uranus.ravnborg.org>
Date:	Wed, 7 Mar 2007 20:24:04 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Vivek Goyal <vgoyal@...ibm.com>
Cc:	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Reloc Kernel List <fastboot@...ts.osdl.org>,
	ebiederm@...ssion.com, akpm@...ux-foundation.org, ak@...e.de,
	hpa@...or.com, magnus.damm@...il.com, lwang@...hat.com,
	dzickus@...hat.com, pavel@...e.cz, rjw@...k.pl
Subject: Re: [PATCH 1/20] x86_64: Assembly safe page.h and pgtable.h

On Wed, Mar 07, 2007 at 12:29:20PM +0530, Vivek Goyal wrote:
> 
> 
> This patch makes pgtable.h and page.h safe to include
> in assembly files like head.S.  Allowing us to use
> symbolic constants instead of hard coded numbers when
> refering to the page tables.
> 
> This patch copies asm-sparc64/const.h to asm-x86_64 to
> get a definition of _AC() a very convinient macro that
> allows us to force the type when we are compiling the
> code in C and to drop all of the type information when
> we are using the constant in assembly.
Should this file not live in asm-generic and be useable
for all architectures?

	Sam
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